[I_am_neo]

Marty sounds like a big waste of money to me. At the very least they should have made it able to sweep or vacuum up what it finds on the floor.

[blcknight]

Slip & fall claims are a big liability for stores like Stop & Shop. One avoided per year pays for Marty.

[onemoresoop]

Marty seems to be unreliable and produce a lot of false alarms. At some point crying wolf won't be taken seriously anymore and Marty's warnings will be ignored.

An alternative to this is to hire a person to babysit Marty, follow him around the store and whenever there's a real spill to clean it up for him. /s